Conveners
C2Po2C - Superconducting RF Systems, Power Cables, and Leads II
- Chanyeop Park (Georgia Tech)
- Al Zeller (NHMFL, FSU)
A dedicated vertical cryostat has been developed and commissioned at STFC Daresbury Laboratory for qualifying 84 high-beta SRF cavities for the ESS (European Spallation Source). The cryostat is designed to test 3 dressed cavities in horizontal configuration in one cool-down run at 2K. The cavities are cooled with superfluid liquid helium filled into their individual helium jackets. This...
Various functional insertion components (FIC), directly connecting a cold mass and the ambient environment, are irreplaceable and play crucial technical roles in many superconducting cryogenic applications. However, such components also bring a huge heat leak to the cold mass within the cryostat. The heat leak is usually much greater than that through entire evacuated MLI insulation system...
High temperature superconducting (HTS) cable, hallmarked with high energy density and compact corridor occupation, advanced rapidly in the past decades. In practical operation, it is common that the cable is under a not so straight pathway and slope will make the local cryogen behave against our expectation and hazard the cooling condition. In the paper, we build a detailed slope section model...
The High Luminosity LHC (HL-LHC) project aims at upgrading the LHC collider after 2025 to increase its luminosity by about a factor of five. As part of this upgrade, new magnets will require an electrical powering system where the power converters are placed in a newly dug service gallery to shield them from the radiations of the colliding beams. The electrical powering will be ensured via a...
A cryogenic cooling system is designed for three-phase 23 kV-2 kA superconducting fault current limiters (SFCL) under development as an Open R&D Program of KEPCO. The goal of this design is a compact, efficient, and cost-effective cryogenic system as commercial product, based upon our successful long-term operation of distribution level SFCL’s. Three phases of HTS components are immersed in a...
STFC Daresbury Laboratory has an ongoing R&D program for developing superconducting thin film technology for superconducting radio frequency (SRF) acceleration cavities. A number of A15 films has already been deposited at various deposition conditions, with various structure, morphology, and on various substrates. This has created a need to measure a range of superconducting properties of the...
